| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.38 | 0.38 | 0.00 |
| Feb | 0.52 | 0.56 | -0.04 |
| Mar | 1.02 | 1.02 | 0.00 |
| Apr | 2.09 | 2.07 | 0.02 |
| May | 3.01 | 3.00 | 0.01 |
| Jun | 3.24 | 3.00 | 0.24 |
| Jul | 3.35 | 3.30 | 0.05 |
| Aug | 3.04 | 2.89 | 0.15 |
| Sep | 1.59 | 1.58 | 0.01 |
| Oct | 1.60 | 1.55 | 0.05 |
| Nov | 0.76 | 0.71 | 0.05 |
| Dec | 0.55 | 0.57 | -0.02 |
21.15 | 20.63 | 0.52 |